Hello
You had unprotected sex some 6 weeks ago and tested for HIV , the test report was negative.
Also developed rashes and gradually this is spreading to more areas.
This type of rash may be due to these possibilities ,these include:
1
Allergy or dermatitis , may be a
contact dermatitis.Diagnosis can be confirmed by physical examination by a
dermatologist . Swab examination from the effected portion will be helpful for examination purposes.
2 Worm infestation . Get in blood and stool examination.
3 HIV infection , as this may be early sign of HIV , if other symptoms also present .
Antibodies to HIV begin to appear within 2 weeks of initial contract and in your case HIV and
std , both were negative , so you should not concern .
To be absolutely sure you need to do the tests at 90 days & when it comes NEGATIVE for HIV then only you can be declared HIV negative as the window period for HIV might be as high as 3 months .
Hope this information will be useful for you.
Good luck.